Malachy Armstrong
There are approximately 1 people named Malachy Armstrong living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 342,754,338 Americans.
This estimate combines SSA birth records for the first name Malachy with Census Bureau frequency data for the surname Armstrong. Below you will find a breakdown of both names, including popularity trends, gender data, and Census demographics where available.
Expected bearers
1
1 in 342,754,338
Named Malachy
617
Alive today
Named Armstrong
149K
Alive today
US population
343M
Denominator
Estimated living: 617
Rarity: Very Rare
Gender: Male
Peak year: 2002
Average age: 21
Top Census group: White (73.4%)
Estimated bearers: 149K
Rarity: Common
Census rank: #221
Per 100K: 43.43
Top ancestry: White (69.7%)
First name trend
Malachy: popularity over time
Year-by-year SSA birth registrations for the first name Malachy. The peak year was 2002 with 35 births. The average person named Malachy today is 21 years old.
Babies born per year
Demographics
Ancestry and ethnicity for Malachy
Self-reported race and ethnicity breakdown for people with the first name Malachy, from the 2020 US Census Bureau first-name tables. The largest published group is White at 73.4%.
The bar chart below shows how people with the first name Malachy described their own race and ethnicity on the 2020 Census form. These are self-reported numbers, and they describe the population who happened to carry the name Malachy at the time of the Census. A first name does not determine a person's race or ethnicity.
- White73.4% · 510
- Black or African American10.9% · 76
- Hispanic or Latino7.5% · 52
- Two or more races6.2% · 43
- Asian and Pacific Islander1.7% · 12
- American Indian and Alaska Native0.3% · 2
Ethnicity
Ancestry of the Armstrong surname
Self-reported race and ethnicity breakdown for people with the surname Armstrong, from the 2020 US Census Bureau. The largest group is White at 69.7%.
The bar chart below shows how people with the surname Armstrong described their own race and ethnicity on the 2020 Census form. These are self-reported numbers, and they describe the population who happened to carry the surname Armstrong at the time of the Census. A surname does not determine a person's race or ethnicity.
- White69.7% · 90,431
- Black or African American20.4% · 26,528
- Two or more races4.5% · 5,843
- Hispanic or Latino3.8% · 4,983
- American Indian and Alaska Native0.9% · 1,144
- Asian and Pacific Islander0.7% · 897
Methodology
How we calculated this
The first name Malachy has a living-bearer frequency of 0.0002% of the US population, based on 617 estimated living Americans carrying this first name (from SSA birth records going back to 1880, adjusted for mortality using CDC life tables).
Even though the Census Bureau now publishes first-name tables, we do not use that file as the main first-name input for this estimate. The latest first-name Census snapshot is from 2020, which makes it 6 years old today. Because Census first-name data is only released once every 10 years, SSA birth records plus CDC survival rates give a better current estimate of how many people are likely alive with the name Malachy right now.
The surname Armstrong appears at a rate of 43.43 per 100,000 residents in the 2020 Census Bureau surname file, which translates to a frequency of 0.0434%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 1 people with the full name Malachy Armstrong. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people with the surname Armstrong
FAQ
Malachy Armstrong: questions and answers
How many people are named Malachy Armstrong?
We estimate approximately 1 people in the United States share the full name Malachy Armstrong. That works out to about 1 in 342,754,338 Americans. This is calculated by combining the first-name frequency (0.0002%) with the surname frequency (43.43 per 100K) against the current US population.
How rare is the name Malachy Armstrong?
We classify Malachy Armstrong as "Very Rare". About 1 in 342,754,338 Americans share this exact first and last name combination.
Is Malachy a male or female name?
Malachy is predominantly male. Out of 681 total SSA registrations, 100.0% were male and 0.0% were female. See the full Malachy profile for detailed gender data.
Where does this data come from?
First-name data comes from the Social Security Administration's national baby name files (1880 to 2024). Surname data comes from the 2020 US Census Bureau decennial surname tables. Living-bearer estimates use CDC actuarial life tables to adjust for mortality. Read the full methodology.
How common is the name Malachy Armstrong?
You can see how common the name Malachy Armstrong is on our sister site HowManyOfMe.org — same data roots, lighter UI.